We divide 90675518 by 663
The aim is to understand the frequency of 663 in 90675518.

Let's proceed to step 1:
When dividing 9 by 663, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 663

Going ahead to step 2:
663 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Append the next digit (6) from the dividend to 90 and continue with: 906 / 663

Step 3:
663 can be fit into 906 1 times, resulting in a remainder of 243.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 663 from 906 to get 243.
Bring next digit (7) of the dividend behind the 243 and repeat the process: 2437 / 663

On to step 4:
663 goes into 2437 3 times with a remainder of 448.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1989 from 2437 to get 448.
Append the next digit (5) from the dividend to 448 and continue with: 4485 / 663

Going ahead to step 5:
If we divide 4485 by 663, we get 6 and a remainder of 507.
Put 6 as the next digit of the answer. 
Result so far: 136.0
Deduct 3978 from 4485 and we're left with 507.
Bring next digit (5) of the dividend behind the 507 and repeat the process: 5075 / 663

Moving on to step 6:
663 goes into 5075 7 times with a remainder of 434.
Write down 7 as next digit of the result. 
Result so far: 1367.0
Subtracting 4641 from 5075 leaves us with 434.
Fetch the next digit (1) from the dividend, attach it to 434 and continue: 4341 / 663

Moving on to step 7:
663 goes into 4341 6 times with a remainder of 363.
The next digit of our result is 6. 
Result so far: 13676.0
Subtract 3978 from 4341 to get 363.
Include the next digit (8) from the dividend after 363, then repeat: 3638 / 663

Advancing to step 8:
If we divide 3638 by 663, we get 5 and a remainder of 323.
Use 5 as the next digit of our solution. 
Result so far: 136765.0
Subtract 3315 from 3638 to get 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Moving on to step 9:
If we divide 3230 by 663, we get 4 and a remainder of 578.
Use 4 as the next digit of our solution. 
Result so far: 136765.4
If we subtract 2652 from 3230, we get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Let's proceed to step 10:
663 can be fit into 5780 8 times, resulting in a remainder of 476.
The number 8 becomes the next digit in our result. 
Result so far: 136765.48
If we subtract 5304 from 5780, we get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Moving on to step 11:
The number 663 fits into 4760 7 times, leaving a remainder of 119.
Use 7 as the next digit of our solution. 
Result so far: 136765.487
Subtract 4641 from 4760 to get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Let's proceed to step 12:
When dividing 1190 by 663, we get 1 with a remainder of 527.
Write down 1 as next digit of the result. 
Result so far: 136765.4871
Subtracting 663 from 1190 leaves us with 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Moving on to step 13:
If we divide 5270 by 663, we get 7 and a remainder of 629.
The next digit of our result is 7. 
Result so far: 136765.48717
If we subtract 4641 from 5270, we get 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

On to step 14:
The number 663 fits into 6290 9 times, leaving a remainder of 323.
The next digit of our result is 9. 
Result so far: 136765.487179
Deduct 5967 from 6290 and we're left with 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Moving on to step 15:
3230 divided by 663 is 4 with a remainder of 578.
Use 4 as the next digit of our solution. 
Result so far: 136765.4871794
Subtract 2652 from 3230 to get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Going ahead to step 16:
The number 663 fits into 5780 8 times, leaving a remainder of 476.
Record the quotient 8 as the next digit in the result. 
Result so far: 136765.48717948
If we take 5304 away from 5780, we end up with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Our division results in 136765.48717948 with a remaining 4.76e-07.